1. Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Dartmouth College, Hanover, NH, USA
2. Department of Chemistry, Dartmouth College, Hanover, NH, USA
3. Institute of Human Virology, University of Maryland School of Medicine, Baltimore, USA
4. Baltimore VA Medical Center, VA Maryland Health Care System, Baltimore, USA
5. Thayer School of Engineering, Dartmouth College, Hanover, NH, USA